DE602005010888D1 - TREATMENT OF STEELWORK BALANCING IN A MULTI-STAGE FLOOR OVEN - Google Patents

TREATMENT OF STEELWORK BALANCING IN A MULTI-STAGE FLOOR OVEN

Info

Publication number
DE602005010888D1
DE602005010888D1 DE200560010888 DE602005010888T DE602005010888D1 DE 602005010888 D1 DE602005010888 D1 DE 602005010888D1 DE 200560010888 DE200560010888 DE 200560010888 DE 602005010888 T DE602005010888 T DE 602005010888T DE 602005010888 D1 DE602005010888 D1 DE 602005010888D1
Authority
DE
Germany
Prior art keywords
sludge
steelwork
balancing
treatment
degree
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
DE200560010888
Other languages
German (de)
Inventor
Emile Lonardi
Jean-Luc Roth
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Paul Wurth SA
Original Assignee
Paul Wurth SA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from EP20040104968 external-priority patent/EP1645645A1/en
Application filed by Paul Wurth SA filed Critical Paul Wurth SA
Publication of DE602005010888D1 publication Critical patent/DE602005010888D1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B9/00—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity
    • F27B9/14—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity characterised by the path of the charge during treatment; characterised by the means by which the charge is moved during treatment
    • F27B9/16—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity characterised by the path of the charge during treatment; characterised by the means by which the charge is moved during treatment the charge moving in a circular or arcuate path
    • F27B9/18—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity characterised by the path of the charge during treatment; characterised by the means by which the charge is moved during treatment the charge moving in a circular or arcuate path under the action of scrapers or pushers
    • F27B9/185—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity characterised by the path of the charge during treatment; characterised by the means by which the charge is moved during treatment the charge moving in a circular or arcuate path under the action of scrapers or pushers multiple hearth type furnaces
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B19/00—Obtaining zinc or zinc oxide
    • C22B19/30—Obtaining zinc or zinc oxide from metallic residues or scraps
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B7/00—Working up raw materials other than ores, e.g. scrap, to produce non-ferrous metals and compounds thereof; Methods of a general interest or applied to the winning of more than two metals
    • C22B7/02—Working-up flue dust
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P10/00—Technologies related to metal processing
    • Y02P10/20—Recycling

Abstract

The invention concerns a method for treating iron-and-steel plant sludge comprising adjusting the available CaO content of the sludge so as to obtain an available CaO content of 3% to 8% based on the sludge weight, adding a carbon-containing fuel, introducing the sludge onto one of the upper stages of a multistage furnace, heating the multistage furnace, gradually transferring the sludge onto the lower stages, and adjusting the temperature of the exhaust gases of the multistage furnace to at least 500.degree. C. and that of the treated sludge at the output of the multistage furnace to a temperature ranging between 700.degree. C. and 800.degree. C.
DE200560010888 2004-10-05 2005-10-04 TREATMENT OF STEELWORK BALANCING IN A MULTI-STAGE FLOOR OVEN Active DE602005010888D1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
EP04104885 2004-10-05
EP20040104968 EP1645645A1 (en) 2004-10-11 2004-10-11 Treatment of steel plant sludges in a multi-stage furnace
PCT/EP2005/054985 WO2006037777A1 (en) 2004-10-05 2005-10-04 Treatment of iron-and-steel plant sludge in a multistage furnace

Publications (1)

Publication Number Publication Date
DE602005010888D1 true DE602005010888D1 (en) 2008-12-18

Family

ID=35526519

Family Applications (1)

Application Number Title Priority Date Filing Date
DE200560010888 Active DE602005010888D1 (en) 2004-10-05 2005-10-04 TREATMENT OF STEELWORK BALANCING IN A MULTI-STAGE FLOOR OVEN

Country Status (8)

Country Link
US (1) US7935174B2 (en)
EP (1) EP1797207B1 (en)
CN (1) CN100419100C (en)
AT (1) ATE413474T1 (en)
BR (1) BRPI0515433A (en)
DE (1) DE602005010888D1 (en)
ES (1) ES2315921T3 (en)
WO (1) WO2006037777A1 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TW201231680A (en) * 2011-01-31 2012-08-01 Jin Zan Environmental Prot Technology Co Ltd Method of separating iron oxide from waste sludge
LU91855B1 (en) 2011-08-18 2013-02-19 Wurth Paul Sa Blast furnace installation
LU92150B1 (en) 2013-02-15 2014-08-18 Wurth Paul Sa Process for charging a burden with a high zinc content in a blast furnace installation
CN107760882B (en) * 2017-09-30 2018-09-21 重庆科技学院 The method for refining zinc in Electric Cooker comminuted steel shot dirt using industrial dust containing calcium oxide

Family Cites Families (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3989513A (en) * 1972-06-06 1976-11-02 Magyar Aluminiumipari Troszt Method for the treatment of red mud
SU630301A1 (en) * 1975-11-06 1978-10-30 Rostovskij Vladimir Charge for lumping iron-containing material
JPS52152811A (en) * 1976-06-16 1977-12-19 Nisshin Steel Co Ltd Treatment of blust furnace sludge
JPS5330402A (en) * 1976-09-01 1978-03-22 Nisshin Steel Co Ltd Process for production of subsidiary material for iron manufacture
JPS5340614A (en) * 1976-09-28 1978-04-13 Nisshin Steel Co Ltd Killing agent used to suppress bubbling of slag and operating method of converter using it
US4248164A (en) 1979-03-09 1981-02-03 Envirotech Corporation Sludge drying system with sand recycle
US4239530A (en) * 1979-01-10 1980-12-16 Board Of Control Of Michigan Technological University Process for producing metallized iron pellets
NO160931C (en) 1987-04-02 1989-06-14 Elkem As STOEVBEHANDLING.
AT392289B (en) 1988-04-08 1991-02-25 Voest Alpine Stahl Donawitz METHOD FOR UTILIZING ZINC-CONTAINED DUST AND SLUDGE
CN1032869C (en) * 1993-05-28 1996-09-25 首钢总公司 Method and unit for utilizing and recovering mud produced by wet dust removal of converter
EP0695004A1 (en) * 1994-07-26 1996-01-31 Hitachi Metals, Ltd. Second harmonic generating apparatus
US5912916A (en) * 1995-05-01 1999-06-15 Alabama Power Company Electric furnace with insulated electrodes and process for producing molten metals
US6355088B1 (en) * 1997-08-04 2002-03-12 Bechtel Corporation Method for direct reduction and upgrading of fine-grained refractory and earthy iron ores and slags
FR2777294B1 (en) * 1998-04-08 2000-12-15 Recupac PROCESS FOR TREATING STEEL DUST
CU23070A3 (en) * 1999-01-12 2005-07-19 Falconbridge Ltd REDUCTION OF THE FLUDIZED LAYER OF LATERITE FINE WITH REDUCTION OF GASES GENERATED IN SITU.
LU90395B1 (en) * 1999-05-03 2000-12-06 Wurth Paul Sa Proc-d- pyrometallurgical treatment of wastes containing metals
US6770249B1 (en) * 1999-09-27 2004-08-03 Chester W. Whitman Process to selectively recover metals from waste dusts, sludges and ores
DE19960575A1 (en) * 1999-12-15 2001-06-21 Krupp Polysius Ag Process and plant for reducing fine ores
LU90766B1 (en) * 2001-04-25 2002-10-28 Wurth Paul Sa Method of operating a multiple hearth furnace
KR100821075B1 (en) * 2001-11-05 2008-04-08 주식회사 포스코 method of manufacturing the sinter reducing the Zn content

Also Published As

Publication number Publication date
US7935174B2 (en) 2011-05-03
CN100419100C (en) 2008-09-17
EP1797207B1 (en) 2008-11-05
EP1797207A1 (en) 2007-06-20
US20080066579A1 (en) 2008-03-20
BRPI0515433A (en) 2008-07-22
ES2315921T3 (en) 2009-04-01
ATE413474T1 (en) 2008-11-15
WO2006037777A1 (en) 2006-04-13
CN101035914A (en) 2007-09-12

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Legal Events

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